To find out IMEI number of your device, just dial *#06# .
To find out device ID, Just dial *#*#8255#*#* and you will get your device id in GTalk Service Monitor. And an another way to find out device id is by going to Menu > Settings > About Phone > Status.

1. First Dial *#7465625# or *#*#3646633#*#* on your android device.

2. Now, click on Connectivity option or call pad,

3. Now look for CDS information and then click on it.

4. Then, checkout for Radio information.

5. Now, if your android device is a dual sim device. Then you will get two option like IMEI_1 [SIM1] and IMEI_2 [SIM2]. Then select any one or of which you want to change IMEI number.

6. Now, change your IMEI number illustrated below,

AT +EGMR=1,7,”IMEI_1” and “AT +EGMR=1,10,”IMEI_2”

7. Now, just replace IMEI1 or IMEI2 with your any your desired number. and then click on SEND.

EDIT : Ca ne marche pas comme prévu : http://android.stackexchange.com/questions/92565/how-to-list-all-major-partitions-with-their-labels
La page ci-dessus en dit un peu plus...
/proc/dumchar_info gives the most details, so this is tried first. Happy MTK users will get this.
/proc/mtd is the second best source.
/proc/emmc should have almost as much as the previous candidates, but is a bit tricky to use
/dev/block/platform/*/by-name, cross-checked with …
/proc/partitions cross-checked with /proc/mounts gives us at least the partitions mounted